Dead links

I found these urls on https://codingblocks.com which either return 404 or 500 error. These should be corrected or removed.
- https://online.codingblocks.com/courses/coding-interview-preparation-course-online<-->404
- https://play.google.com/store/apps/details?id=com.gamershq.FlyingModi<-->404
- https://online.codingblocks.com/courses/angular-node-js<-->500
- https://online.codingblocks.com/courses/coding-interview-preparation-online#runs<-->500
- https://online.codingblocks.com/courses/deep-learning-neural-networks<-->404
- https://play.google.com/store/apps/details?id=in.tosc.digitaloceanapp<-->404
- https://codingblocks.com/bootcamps/coding-interview-preparation.html#java-bundle<-->404
- https://codingblocks.com/bootcamps/coding-interview-preparation.html#cpp-bundle<-->404
i am testing my urlscanner tool and have verified that these links do not work.

Comienza localizando las ocho URL indicadas en el código fuente del sitio web y verifica cada una con la respuesta 404 o 500 indicada. Se considera completado cuando se haya corregido o eliminado cada enlace indicado y el escáner de URL ya no informe de estos errores.

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